| 1. | Black Mesa (On a Rail) 3 | 23 | | Black Mesa
|
| 2. | Black Mesa (Blast Pit) 3 | 18 | | Black Mesa
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| 3. | Black Mesa (Anomalous Materials) | 16 | | Black Mesa
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| 4. | Black Mesa (On a Rail) 2 | 13 | | Black Mesa
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| 5. | Black Mesa (Black Mesa Inbound) | 12 | | Black Mesa
|
| 6. | Black Mesa (Unforeseen Consequences) | 10 | | Black Mesa
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| 7. | Black Mesa (Office Complex) 2 | 9 | | Black Mesa
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| 8. | Black Mesa (Apprehension) 3 | 9 | | Black Mesa
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| 9. | Black Mesa (Surface Tension) 4 | 9 | | Black Mesa
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| 10. | Black Mesa (Blast Pit) 2 | 8 | | Black Mesa
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| 11. | Black Mesa (Office Complex) | 8 | | Black Mesa
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| 12. | Black Mesa (Unforeseen Consequences) Pt2 | 8 | | Black Mesa
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| 13. | Black Mesa (Blast Pit) 4 | 8 | | Black Mesa
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| 14. | Black Mesa (On a Rail) | 7 | | Black Mesa
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| 15. | Black Mesa (Blast Pit) | 7 | | Black Mesa
|
| 16. | Black Mesa (Apprehension) | 7 | | Black Mesa
|
| 17. | Black Mesa (Power Up) | 6 | | Black Mesa
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| 18. | Black Mesa (We Got Hostiles) 2 | 6 | | Black Mesa
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| 19. | Black Mesa (Unforeseen Consequences) Part 3 | 5 | | Black Mesa
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| 20. | Black Mesa (Surface Tension) 3 | 5 | | Black Mesa
|
| 21. | Black Mesa (Power Up) 2 | 5 | | Black Mesa
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| 22. | Black Mesa (Office Complex) 3 | 5 | | Black Mesa
|
| 23. | Black Mesa (Apprehension) 2 | 5 | | Black Mesa
|
| 24. | Black Mesa (Lambda Core) 2 | 5 | | Black Mesa
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| 25. | Black Mesa (Lambda Core) | 4 | | Black Mesa
|
| 26. | Black Mesa (Surface Tension) | 4 | | Black Mesa
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| 27. | Black Mesa (Power Up) 3 | 4 | | Black Mesa
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| 28. | Black Mesa (Forget Freeman) | 4 | | Black Mesa
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| 29. | Black Mesa (We Got Hostiles) 3 | 4 | | Black Mesa
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| 30. | Black Mesa (Surface Tension) 2 | 4 | | Black Mesa
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| 31. | Black Mesa (We Got Hostiles) | 4 | | Black Mesa
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| 32. | Xen Black Mesa (Xen) 2 | 3 | | Black Mesa
|
| 33. | Black Mesa (Residue Processing) | 3 | | Black Mesa
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| 34. | Black Mesa (Questionable Ethics) 3 | 3 | | Black Mesa
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| 35. | Black Mesa (Office Complex) 4 | 3 | | Black Mesa
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| 36. | Black Mesa (Questionable Ethics) 2 | 3 | | Black Mesa
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| 37. | Xen Black Mesa (Xen) 3 | 3 | | Black Mesa
|
| 38. | Black Mesa (Surface Tension) 8 | 3 | | Black Mesa
|
| 39. | Black Mesa (Questionable Ethics) | 3 | | Black Mesa
|
| 40. | Black Mesa (Surface Tension) 6 | 2 | | Black Mesa
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| 41. | Black Mesa (Lambda Core) 6 | 2 | | Black Mesa
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| 42. | Black Mesa (Residue Processing) 2 | 2 | | Black Mesa
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| 43. | Black Mesa (Lambda Core) 7 | 2 | | Black Mesa
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| 44. | Xen Black Mesa (Xen) 1 | 2 | | Black Mesa
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| 45. | Black Mesa (Lambda Core) 3 | 2 | | Black Mesa
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| 46. | Black Mesa (Lambda Core) 4 | 1 | | Black Mesa
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| 47. | Black Mesa (Forget Freeman) 2 | 1 | | Black Mesa
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| 48. | Black Mesa (Lambda core) 5 | 1 | | Black Mesa
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| 49. | Black Mesa (Surface Tension) 9 | 1 | | Black Mesa
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| 50. | Black Mesa (Surface Tension) 7 | 1 | | Black Mesa
|
| 51. | Black Mesa (Surface Tension) 5 | 0 | | Black Mesa
|
